Step 3: Add the Cinnamon-Sugar Topping
In a small bowl, stir together the sugar and cinnamon, then sprinkle it evenly over the dough.
Tip: Don’t mix it in—keeping it on top allows it to form that signature slightly crisp, flavorful crust.
Step 4: Cook
Cover and cook on LOW for 1 to 1 1/2 hours.
Tip: Start checking at 1 hour. Slow cookers vary, and overcooking can dry them out. The edges should be lightly golden, and a toothpick should come out with a few moist crumbs.
Step 5: Let Them Set
Turn off the slow cooker and allow the bars to rest for 15–20 minutes before cutting.
Tip: This step helps them firm up. If you slice too soon, they may fall apart.